Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Painter walking on trestle plank before tipping
- Toranc3
- · Replies 15 ·
How Do Significant Figures Affect Calculations in Physics Problems?
- zed101
- · Replies 3 ·
Calculate the height from the speed of sound
- Julio Cesar
- · Replies 2 ·
What is the value of (beta) for a floating cylinder in a liquid?
- blizzard12345
- · Replies 9 ·
Calculating thermal energy released when aluminum cools an solidifies
- thermite
- · Replies 2 ·
Understanding Magnetic Fields: N and S Pole Placement in Current-Carrying Wires
- bfusco
- · Replies 2 ·
Finding tension in a pulley system where a person pulls two strings
- stonecoldgen
- · Replies 1 ·
Induced current's appearance in different situations.
- kakadas
- · Replies 1 ·
Finding nodes and antinodes using the standing wave equation
- riseofphoenix
- · Replies 3 ·
Rotational Motion: Energy Conservation
- SpringWater
- · Replies 1 ·
Hinged beam suspended at an angle
- rickbusiness
- · Replies 1 ·
Temperature change in solid after gas cools 50°C
- 39643
- · Replies 2 ·
Centripetal Force and Roller Coasters
- N0ct
- · Replies 5 ·
An object with mass 5 kg is under constant force (10i+20j)N
- vipson231
- · Replies 2 ·
Work done on incline with friction
- tehstone
- · Replies 8 ·
Power, velocity and frictional resistance
- Darth Frodo
- · Replies 1 ·
Gravitational potential energy of three-sphere system
- chemEcook
- · Replies 1 ·
Thermal Physics- Can you make good tea at a certain temperature
- H.fulls
- · Replies 14 ·
(THERMO) - Adiabatic Expansion - known P1, P2, and T1
- Zomboy
- · Replies 1 ·
Wind speed calculation with an anemometer
- tonykart44
- · Replies 8 ·
Capacitor Problem: Charges and Potential Differences on Metallic Plates
- twinklealices
- · Replies 1 ·
Electric Dipoles using Dirac's Delta function
- TheWire247
- · Replies 1 ·
What Are the Mass and Friction Coefficient for the Blocks?
- EPFLstudent
- · Replies 3 ·
Inverted garbage can and water hydrant
- WannabeNewton
- · Replies 5 ·
The Work–Kinetic Energy Theorem
- TONI2012
- · Replies 6 ·
What equations can I use to find the tension in this cable? Transverse pulse ?
- riseofphoenix
- · Replies 1 ·
Eigenvalues and Eigenfunctions for a Delta Potential Well
- Timelord_Zhou
- · Replies 2 ·
Can You Solve These Challenging Physics Word Problems?
- GosuWaffles
- · Replies 7 ·
Mach-Zehnder interferometer with electro-optic crystal
- GreatEscapist
- · Replies 2 ·
Find Spring constant given distance stretched by placing rock on spring
- SuspendedFour
- · Replies 4 ·
Solve Basic Torque Problem: Find Downward Accel with Mass m & Radius r
- oreosama
- · Replies 1 ·
Finding speed of objects after elastic collison
- joe426
- · Replies 12 ·
Stress on a beam supported by mass-less cable, friction at play, no angle given
- brutalmouse
- · Replies 5 ·
REAL QUICK question about how to solve for the period of a simple pendulum?
- riseofphoenix
- · Replies 2 ·
Finding Kinetic Energy and Velocity of a pulley / block system
- pyranos
- · Replies 3 ·
How many times will the block cross the rough patch
- JNason11
- · Replies 10 ·
Will tension be the same throughout a massless cord connecting multiple masses?
- peripatein
- · Replies 9 ·
Solid brass ball rolling down loop track: energy and normal force
- nchin
- · Replies 8 ·
Why does the given diagram not violate Gauss's law of magnetism?
- phosgene
- · Replies 3 ·
How to Calculate Error on Beat Frequency?
- belgin fish
- · Replies 1 ·
Finding moment of inertia for two masses on a rod rotating about their center of mass
- Toranc3
- · Replies 9 ·
Variation of pressure with depth
- whynot314
- · Replies 3 ·
Calculating Height Using the Work-Energy Theorem
- ehabmozart
- · Replies 6 ·
I do not why the particle does the simple harmonic motion.
- xiaozegu
- · Replies 20 ·
Finding Normal Modes (completely stumped)
- retro10x
- · Replies 1 ·
Vibrational kinetic and spring potential energy for two blocks on a spring
- dizzid122
- · Replies 1 ·
Angular momentum of rotating particle and stick system
- riseofphoenix
- · Replies 2 ·
Simple Harmonic Motion and equilibrium
- daivinhtran
- · Replies 5 ·
Calculating the translation force on a cam follower
- T=FxR
- · Replies 3 ·
Deriving the maximum height formula for projectile motion
- arbartz
- · Replies 3 ·
How to Calculate Work on a Puck Using Conservation of Angular Momentum?
- riseofphoenix
- · Replies 5 ·
Finding angular speed of a sphere rolling down a slope
- riseofphoenix
- · Replies 4 ·
Newtons third law/law of gravitation
- vipson231
- · Replies 2 ·
Angular momentum: rotating rod and a ball
- Karol
- · Replies 1 ·
Interference between two waves problem
- lemin_rew
- · Replies 12 ·
A duck is floating on a lake with 25% of it's volume beneath the water
- Mr. Fish
- · Replies 6 ·
Starting an electrostatic cylinder problem
- Blastrix91
- · Replies 1 ·
Finding angular speed when a woman slides down a turntable
- riseofphoenix
- · Replies 12 ·
Calculating Electric Field at the Center of a Charged Hemisphere
- Saitama
- · Replies 13 ·
How Does the Angle Impact Force Calculation in Newton's Second Law Problems?
- Ammar w
- · Replies 2 ·
Significance of delta in expressions.
- Minki
- · Replies 6 ·
Force of Bullet Sending Person Flying Backwards
- MG5
- · Replies 23 ·
Velocity from Force position graph
- shrutij
- · Replies 5 ·
Finding angular speed from torque and angular displacement
- riseofphoenix
- · Replies 14 ·
How Does the Shape of a 3D Trapezium Affect Electrical Resistance?
- bowlbase
- · Replies 12 ·
What is the Time it Takes for a Car to Fall off a Cliff with Given Parameters?
- michelle2011
- · Replies 2 ·
Solving Crazy Salad Spinner's Puzzle: Find String Strength
- bohobelle
- · Replies 1 ·
Friction direction when applying force to rolling cylinder
- nchin
- · Replies 1 ·
Flywheel RPM after 32 second power failure
- oldspice1212
- · Replies 16 ·
Is Your House on a Node or an Antinode for Radio Waves?
- huzjm
- · Replies 4 ·
Sphere on an incline plane against a wall
- ethan340
- · Replies 3 ·
What Determines the Maximum Height for Water Flow in a Faucet?
- alaa410
- · Replies 7 ·
Angular Velocity Keeping Strings Taut
- newtophysics2
- · Replies 5 ·
Tension in two ropes with a mass hanging from them
- flemonster
- · Replies 5 ·
Need to find distance of an object over an incline plane
- snailpoop
- · Replies 3 ·
What is the weight of an astronaut inside a satellite in circular orbit?
- NasuSama
- · Replies 10 ·
How to Find the Angular Speed of a Spool Using Energy Conservation?
- riseofphoenix
- · Replies 12 ·
Work done pulling a rope: fixed anchor vs two floating objects
- Yh Hoo
- · Replies 2 ·
Kicking a ball over a goal post
- tomstringer
- · Replies 12 ·
Elastic collision of two titanium spheres at equal speeds
- nchin
- · Replies 1 ·
Using Newtons 2nd law for rotational motion
- gralla55
- · Replies 1 ·
How do I find di_L(0)/dt for a second order RLC circuit after the switch opens?
- Jebus_Chris
- · Replies 2 ·
Finding mass of titanium sphere in elastic collision where one stops
- nchin
- · Replies 10 ·
Position and Velocity as a function of time
- Wilkins
- · Replies 3 ·
Finding components of a force vector given length components of vector
- adam199
- · Replies 1 ·
Conservation of Energy and internal energy
- Ishida52134
- · Replies 3 ·
Did the incoming car's brakes fail going downhill in this cliff collision?
- zachk19
- · Replies 1 ·
Energy and Center of Mass Problem
- bohobelle
- · Replies 2 ·
Energy of a Hydrogen Flouride molecule in normal mode vibration
- Dixanadu
- · Replies 1 ·
Challenging physics problem with spring, oscillations and moment of inertia?
- Kratos321
- · Replies 7 ·
Special Ratio problem (not a math problem. It's the physic problem)
- NasuSama
- · Replies 13 ·
Conservative Forces and Fg Questions
- BizzPhizz
- · Replies 5 ·
Coefficient of static friction and kinetic friction problem
- flemonster
- · Replies 6 ·
Newtons laws/weight/acceleration/force
- lilkiddykid4
- · Replies 1 ·
How Do I Calculate the Torque on a Tooth's Root About Point A?
- riseofphoenix
- · Replies 8 ·
How do I prove I=(V(sub b))/R*e^-t/RC experimentally
- Dester
- · Replies 1 ·
How Does a Man's Movement Affect the Angular Speed of a Merry-Go-Round?
- DLH112
- · Replies 4 ·
Rotational and Translational Kinetic Energy - marble and bowl problem.
- binbagsss
- · Replies 4 ·
Why why why? Sum of torque, changes in directions? This is
- riseofphoenix
- · Replies 3 ·
Force diagram for ring/bead problem
- PhizKid
- · Replies 25 ·